Python engine with NTLM receives AttributeError: HTTPResponse instance does not have attribute '__iter__'

Question

I am trying to access a site protected by NTLM authentication using python-ntlm and mechanize, but I am getting this error.

File "build/bdist.macosx-10.6-universal/egg/mechanize/_mechanize.py", line 203, in open
File "build/bdist.macosx-10.6-universal/egg/mechanize/_mechanize.py", line 249, in _mech_open
File "build/bdist.macosx-10.6-universal/egg/mechanize/_mechanize.py", line 304, in _set_response
File "build/bdist.macosx-10.6-universal/egg/mechanize/_response.py", line 521, in upgrade_response
File "build/bdist.macosx-10.6-universal/egg/mechanize/_response.py", line 338, in __init__
File "build/bdist.macosx-10.6-universal/egg/mechanize/_response.py", line 353, in _set_fp
AttributeError: HTTPResponse instance has no attribute '__iter__'

I can get the correct answer when I use urllib2 library. But for some reason, it fails when I try to access it using mechanization.

This is the code I have.

import urllib2
from ntlm import HTTPNtlmAuthHandler

user = '<myusername>'
password = "<mypass>"
url = "https://somesite.com"

passman = urllib2.HTTPPasswordMgrWithDefaultRealm()
passman.add_password(None, url, user, password)
# create the NTLM authentication handler
auth_NTLM = HTTPNtlmAuthHandler.HTTPNtlmAuthHandler(passman)

import mechanize
browser = mechanize.Browser()
handlersToKeep = []

for handler in browser.handlers:
    if not isinstance(handler,
    (mechanize._http.HTTPRobotRulesProcessor)):
        handlersToKeep.append(handler)

browser.handlers = handlersToKeep
browser.add_handler(auth_NTLM)

response = browser.open(url)
print(response.read())

Does anyone know what is going on? Am I doing something wrong here?

Answer 1

I fixed the mechanization to get around this:

--- _response.py.old    2013-02-06 11:14:33.208385467 +0100
+++ _response.py    2013-02-06 11:21:41.884081708 +0100
@@ -350,8 +350,13 @@
             self.fileno = self.fp.fileno
         else:
             self.fileno = lambda: None
-        self.__iter__ = self.fp.__iter__
-        self.next = self.fp.next
+
+        if hasattr(self.fp, "__iter__"):
+            self.__iter__ = self.fp.__iter__
+            self.next = self.fp.next
+        else:
+            self.__iter__ = lambda self: self
+            self.next = lambda self: self.fp.readline()

     def __repr__(self):
         return '<%s at %s whose fp = %r>' % (